Royal Family Around the World: Prince Harry Attends the ICAP's 24th Annual Charity Trading Day In Aid Of Sentebale on December 7, 2016 in London, England.

Prince Harry joined brokers at the annual ICAP charity day, which sees traders donate all of their profits from the day to good causes

Prince Harry strikes a pose worthy of The Wolf of Wall Street as he joins brokers at ICAP. He was full of jokes as he helped to close deals worth everything from £50 million to £635 million

Prince Harry is greeted by the Lord Mayor Andrew Parmley as he arrives at the charity event in the City of London on Wednesday. Many of ICAP's employees wore fancy dress for the occasion

Prince Harry joined dozens of brokers and celebrities today to help close deals for the global firm ICAP and help generate money for a range of good causes.

Prince Harry arrives in the City on Wednesday (12 Dec. 2016) morning for the event. All the global revenues from trading during ICAP's 24th charity day will go to number of causes around the world.

Prince Harry shares a giggle with brokers in the City of London. Since 1993 the ICAP charity day has raised almost £127 million for charities, with more 60 offices worldwide taking part.

Prince Harry takes calls as he joins employees in fancy dress for the charity event. On the day, 100% of ICAP's revenues and its brokers' commissions are donated to more than 200 charities

The Countess of Wessex smiles as she is welcomed at the charity event in the City of London on Wednesday for the firm's 24th annual fundraising day attended by celebrities and royals

Sophie, Countess of Wessex arriving to join City brokers ICAP and celebrities from the world of sport, television and entertainment on Wednesday morning in the City of London

Prince Harry attends the ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England. The Sentebale charity, of which Prince Harry is Patron, supports orphans and vulnerable children in Southern Africa.

Prince Harry attends the ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.

Sophie, Countess of Wessex attends the ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.

Sophie, Countess of Wessex attends the ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England. The Sentebale charity, of which Prince Harry is Patron, supports orphans and vulnerable children in Southern Africa.

Sophie, Countess of Wessex attends the ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.

Sophie, Countess of Wessex and Tony Hadley attend the ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.

Sophie, Countess of Wessex attends the ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.

Prince Harry attends an ICAP Charity Trading Day in support of Sentebale on December 7, 2016 in London, United Kingdom.

Prince Harry plays the London Air Ambulance Operation Game during an ICAP Charity Trading Day in support of Sentebale on December 7, 2016 in London, United Kingdom.

Prince Harry with Kate Arnold on the EBS Direct Desk during an ICAP Charity Trading Day in support of Sentebale on December 7, 2016 in London, United Kingdom.

Sophie, Countess of Wessex attends the ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.

Prince Harry attends ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.

Sophie, Countess of Wessex conducts a trade via telephone as she attends ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England

Sophie, Countess of Wessex conducts a trade via telephone as she attends ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.

Sophie, Countess of Wessex plays a giant game of Operation as she attends ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.

Prince Harry attends the ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.

Sophie, Countess of Wessex attends the ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.

Prince Harry attends the ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.

Sophie, Countess of Wessex attends the ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.

Prince Harry attends the ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.

Sophie, Countess of Wessex attends the ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.

Sophie, Countess of Wessex hair detail as she attends the ICAP's 24th annual charity trading day in aid of Sentebale at ICAP on December 7, 2016 in London, England.